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  • Title: Novosphingobium aquaticum sp. nov., isolated from lake water in Suwon, Republic of Korea.
    Author: Singh H, Du J, Yang JE, Yin C, Kook M, Yi TH.
    Journal: Antonie Van Leeuwenhoek; 2015 Oct; 108(4):851-8. PubMed ID: 26205206.
    Abstract:
    A novel Gram-stain negative, yellow coloured, strictly aerobic, rod-shaped, non-motile bacterium designated as THW-SA1(T), was isolated from lake water near Samsung apartment, Suwon, Republic of Korea. The phylogenetic analysis based on 16S rRNA gene sequences showed that strain THW-SA1(T) belongs to the genus Novosphingobium and is closely related to Novosphingobium taihuense (97.8 %) and Novosphingobium subterraneum (97.1 %). The DNA-DNA relatedness values between strain THW-SA1(T) and the most closely related type strains were found to be less than 30.0 %. The DNA G+C content was determined to be 67.5 mol%. The strain grows optimally at 25-28 °C, at pH 7.0, and in the presence of 0.5 % NaCl. The predominant isoprenoid quinone was identified as ubiquinone Q-10. The polar lipid profile comprises diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, phosphatidyldimethylethanolamine, sphingoglycolipid, phosphatidylcholine, some unidentified phospholipids and some unidentified polar lipids. Fatty acids characteristic for this genus, such as C16:1, C14:0 2-OH, C16:1 ω6c and/or C16:1 ω7c (summed feature 3) and C18:1 ω6c and/or C18:1 ω7c (summed feature 8) were also detected. On the basis of the phenotypic and genotypic analysis, the strain THW-SA1(T) is considered to represent a novel species of the genus Novosphingobium, for which the name Novosphingobium aquaticum sp. nov. is proposed. The type strain is THW-SA1(T) (=KCTC 42608(T)=CCTCC AB 2015114(T)).
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